论文标题
超级质量黑洞的禁止暗物质燃烧
Forbidden Dark Matter Combusted Around Supermassive Black Hole
论文作者
论文摘要
按照定义，禁忌的暗物质不能在黑暗部门的一对较重的伴侣中，无论是SM粒子还是其在黑暗部门的伴侣。我们指出的是，在超级质量黑洞周围重新激活禁止的歼灭通道的可能性。被禁止的暗物质被吸引到黑洞中，以克服歼灭阈值。随后对光子歼灭产物的衰变在黑洞周围留下了独特的信号，可以用作禁止暗物质的吸烟枪。为了说明，围绕Sgr $ a^*$的费米 - 拉特数据对重新激活的禁止an灭的热平均横截面提供了初步约束，该横截面与DM Relic密度要求一致。
The forbidden dark matter cannot annihilate into a pair of heavier partners, either SM particles or its partners in the dark sector, at the late stage of cosmological evolution by definition. We point out the possibility of reactivating the forbidden annihilation channel around supermassive black holes. Being attracted towards a black hole, the forbidden dark matter is significantly accelerated to overcome the annihilation threshold. The subsequent decay of the annihilation products to photon leaves a unique signal around the black hole, which can serve as a smoking gun for the forbidden dark matter. For illustration, the Fermi-LAT data around Sgr $A^*$ provides a preliminary constraint on the thermally averaged cross section of the reactivated forbidden annihilation that is consistent with the DM relic density requirement.
